Place the chicken in a mixing bowl; add light and dark soy sauce, corn starch and sesame oil. Mix the ingredients with bare hands to ensure the chicken is well coated flavors. Marinate for at least 1 hour in the fridge. Slice the each chicken breast into 3 leaving about 1 inch at the top unsliced to hold them together. Fry for about 3 minutes each side until golden. Serve with potato chips.